I have a blister on my butt..?

i am sorry to hear that, maybe the hot weather caused this , keep your windows open and make the wind flow , then you 'll be OK

It could be a boil , they get reall sore ,boils are red , pus-filled lumps that are tender, warm ,and or painful , A yellow or white point at the drain or discharge pus. you can soak in warm water can help alleviate the pain and hasten the draining , it will bring it to a head and drain then doctor it with some antibacterial soap and bandage it , My broyjer use to get theses in his armpits , mom was a RN she would drain them ,I know they would get awfully sore . Maybe this will help good luck .

got them herpes